Lutheb e



(Model.)

L. E. MANSFIELD 8v M. D. MOORE.

BLEVATBD RAILWAY. No. 257,034. Patented Apr.25, 1882.

FIG. Il.

G TOR im.. @WOL WITNESSES UNITED STATES ATENT OFFICE.

LUTHER E. MANSFIELD AND MARQUIS D. MOORE, OF BROOKLYN, NEW YORK, ASSIGNORS OF THREE-FOURTHS TO SAMUEL BROMBERG AND SAMUEL H. MILDENBERG, BOTH OF SAME PLACE.

ELEVATED RAILWAY.

' srnerrrcATroN forming part of Letters Application tiled January D, 1880.

To all whom it may concern:

Be it known that we, LUTHER E. MANs- FIELD and MARQUIS D. MOORE, of the city of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Elevated Railways; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable othersI skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of our inventionis to improve the construction of elevated railways; and it consists in the construction and arrangement of parts, as will be more fully described hereinafter, reference being had to the accompanying drawings, in which- Figure 1 represents a side elevation of a part ot' our elevated railway. Fig. 2 is a plan view of the same. Fig. 3 is a cross-section thereof.'

In the drawings, A represents a continuous main chord or cable, made ot' iron or steel wire rope, by which the roadway is suspended.

y This chord is supported on suitably-constructed chairs a, which are provided with frictionrollers, so as to allow the chord to move easily over them.

The cable may be made of links, if desired, instead of wire rope, or of chains; but we prefer wire rope.

The chairs are supported on towers-or columns B, made of any suitable material and construction, and are braced transversely by trusses C O between the towers. The towers ,are heldin position and held in place by iron socketed shoes b, which are firmly secured to the foundation c by bolts d. The roadway D is suspended from the main chordA by a suitable number of guys, E, and consists preferably of an upper and lower Stringer or chord, e and f, held apart in proper position by diagonal braces g, and said roadway may be made' of wood, iron, or other suitable matcrial. Upon this roadway the stringers, cross- .'Patent No. 257,034, dated April 25, 1882.

Renewed March 8, 1882. (Model.)

4lties, and rails of the railroad are suitably secured.

In the towers, at certain intervals and wherever desired, inay be arranged stairways, by which to ascend and descend to and from the road. rIhe towers may be further held in position by longitudinal end guys, F, which are secured in suitable foundations and prevent swaying.

At the corners or sharp angles the roadway G is made solid, as it would be impraeticable to suspend the road by cables around said corners or curves. An important feature in the construction is that the cables are arranged so as to taper in width `or approach each other from the ends toward the center, so as to give the cables a duplex curve, by which the swaying of the railway road-bed is also prevented. Another feature of this arrangement is that the vibrations are carried along the cables to the point of their passing over the towers, where they are dispelled, thus preventing the noise conse quent upon trains running over columns at short intervals.

The great advantages of making the main cables of a continuous wire rope are that the towers can be placed much farther apart than with elevated roads as now constructed, which are supported on each side of the street by columns at short intervals, and connected by heavy trussed girders, which also obstruct the sunlight and heat. The expansion and contraction are also much better compensated for than in any elevated railway, and the danger of bolts becoming loose or the long trussed girders shrinking is entirely obviated. The whole general appearance is also much neater and lighter, andthe construction, with less material, much stron ger than the ordinary roads. The parts can be also much easier repaired in case any should wear out or get out of order, and the expense is a great deal less.

We are aware that suspension-bridges have been made with a continuous cable of wire rope for one span, and therefore do not broadly claim the use of a continuous chord 5 but,

Having described our invention, what we claim, and desire to secure by Letters Patent, 1s-

'lhe elevated railway herein described, oonsisting of the continuous cable A, extending the entire distance of each straight part, pussng over chairs a, with frictonrollers, and suspending the roadbed D by guys E, und supported on towers B, provided with trusses C C', guys F, and stairways, and the solid road- Way G at the corners, all constructed and arranged as shown and specified.

In testimony that We claim the foregoing We .have hereunto set our hands this 28th day of November, 1879.

LUTHER E; MANSFIELD. MARQUIS D. MOORE. Vtuesses to signature of M. D. Moore:

WALTER E. HANTscH, SAML. BROMBERG. Witnesses to signature of L. E. Mansfield:

GEO. H. SGIDMORE, J. FOUGKE STONE. 

